What are the steps in homeostasis?

Stimulus bring about changes to the receptors, when the receptor detect some changes the series of information starts.
From RECEPTORS up to central nervous system(CONTROL CENTRE) through an AFFERENT PATHWAY where by sent massage is interpreted. Then feedback is taken by EFFERENT PATHWAY up to EFFECTOR which is responsible to bring about response.

Stimulus provides change in variable, receptor detects change, Information is sent to the control center (afferently), Information is sent efferently to receptor, effector responds bringing variable back to homeostasis.